<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <div id="app">
        {{time | date}}
    </div>
</body>
<script src="./vue.min.js"></script>
<script>
    Vue.filter("date",function(v){
            console.log(v);
            let mytime = new Date(v);
            console.log(mytime.getDate());
            var str = mytime.getFullYear()+"--"+mytime.getMonth()+"--"+mytime.getDate();
            return str;

    })

    const vm = new Vue({
        el:"#app",
        data:{
          time:1660638685934
        },
        // created() {
        //     let mytime = new Date();
        //     console.log(mytime);
        // },
    })

    

</script>
</html>